Improved machine for punching metals



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H. A. SHIPP, OF'LONDON, ENGLANEASSIGNOR TO e A. GRIFEING, 0F NEW YOR Letters Patent No. 96,492, dated November 2, 1869.

IMPROVEiD MACHINE FOR PUNCHING'METALS. i

The Schedulereferred to in these Letters Patent 'and making pm of the same 'To all to 'whom these presents shall come: I

exact description part of' this specification, and in means of' a small and cheap implement, such as I have devised.

The motives which have actuated me in originating the inventibn herein-described, have been to produce a. small, compact, and effective, lult above all inexpensive machine, such as will adapt itself' to use, not only in shops of'y any grade or size, but which may be purchased by mechanics f'or their individual use at home, and in fart by a multitude of' people whom the comparative high cost of' such articles has heretofore prevented f'rom possessing.

My improved machine consists, first, in a solid and substantial block of' metal, preferably.of'cast-iron, f'or obvious reasons of' economy, such block, at about its centre, lhaving formed or cut within it aA transverse gi oove ororifice, for receiving the object to be punched, and also having a hole bored partially or wholly, endwise, through it, to meet or intercept such orifice,l the inner portion of' such bore receiving a punch to puncture the object,aud the outer portion of' the same receiving a screw, whiehis screwed into. it, and abuts against. the adjacentmul of the punch or punch-half the necessary rotations of' such screw being effected by a movable 'lever or crank applied to itsghead, .the movements of' surh lever, f'onnd necessary to revolve the screw, being efif'ected by a right-and-left screw, one portion of' which screws through the outer extremity thereof', and the other portion through a stationary arm or branch, making part of'rthe main block of' the machine, and disposed in juxtaposition to the lever, the whole being in mannerand for the purpose as hereinafter more fully explained.

In the drawings, annexed to this specification, and which illustrate lny invention, the oblong block, composing the body of' the instrument, isrepresented at A, such block having an outstanding stationary arm or branch, B, departing f'rom it near to one end, and at about right angles toits Ibngest axis.

an Improved Hand-Implement or, IMachine f'or Punching Met-als; and do hereby declare the accompanying v v metais has pre- -cluded thc possibility of' .accomplishing this result by f The block A has a transverse groove or passage, (l, cnt into it from the' side opposite t-hc arm B, before mentioned, this 'passage being intended to receive the object to be punched. v

A. oylimlricalhole, D, is bored axially through the block A, from end to end thereof', and so as to interceptthe cross-cut or passage C, the portion ot' this bore -below suchpassage constituting the punch-well, so

called, which admits of' the escape of' the pellets pro-l duced by the punch.

The portion E, of the bore'D, above the passage 0,.

is for reception of the punch o and its operatiiig-screw, the extreme lower end, a', of this portion, E, of' the bar being contracted, to permit escape of the punch in this direction. The shank of1 the punch is ,shown at a,

and its head at 1),.the latter' loosely filling the bore D. A

A spiral spring, c, is placed within the bore E,"an'd between the' bottom thereof' and the' head ofthe punch,

and'servng, by its expansion, to f'orce the shank or cutterof" the` punch from out of' the passage-way C A screw-bolt, F, is screwed into'a female screw, cut within the upper part of' the bore E, suoli bolt screwing down upon the head of the punch, a cap, G, being preferably interposed between the two.

The head H, of' the bolt F, is square or polygonal,

and is embraced 'byone extremity of' a movable or. vibrator-y arm or lever, I, of'subst-antially like shape, and

of the length of` thc'stationary arm B, bet'ore men-v tioned, and being in general disposition parallel to suchl stationary arm. 4

A nut, J, should be secured upon the outer end ofthe bolt. F, toseoure the arm I firmly thereto.

VVlthin an enclosure, produced, in the extreme end of'eacharm B andA I, l vswivel an oblong nut, e, while interposed between these arms, and screwing into these nuts, I vdispose a rod,l f,. having cut upon opposite halves -a right-and-left screw, g` h, as repro` sented, a milled head, t', 0 1' awiuch-,JQ being applied in a suitable manner to such rod, for 'the purpose of' rotating it in either direction.

The 'pitch of the threads of' the screw bolt vI1" runs in such direction, that the approach of' the two aims B and I shall lower this bolt, and consequently the punch, with a powerf'ul leverage, or suficiently so to punch a piece of' metal of considerable thickness, which may be placed iu the cross-cut 0,' the bottom of which serves as an abutment to resist such leverage.

Hence, it will result that a turning offtlhe hand, screw f in one direction will contract the arms or jaws .B I, and lower the screw-bolt and punch, andare, verse movement or separation ot' lthe jaws will raise the screw-bolt, by this means permitting the springe to elevate the punchfrom out ofthe metal-aud of' the passage C. v

The bod'y A, of the. instrument, should be con- HIMSELF AND 'ABNERM strncted with a bottom extension or shank, to serve as a bench-rest, and to maintain it in a perpendicular position.

My implement, made as above described, has been found, in practice, to work admirably, punching metals of considerable thickness with great ease.

lt is durable, not liable to derangement, as will be at once apparent, and, as has already been herein pre faced, may be produced at such small cost as to be within reach of any one having occasion for such an implement. l

C laims.

Having thus described-the nature, operation, and advantages ot' my invention,

What 1 believe to be novel, and desire to secure by Letters Paten-t of the United States, is as follows:

1. The combination and awangement oi' the bloc-lt A, the lever B, and arm' I, the punch O, and the screwthreaded bolt F, the lever B being,r operated by the right-and-left screws g It, connecting said levers to the arm, and the whole operating as explained..

2. The combination, with the stationary arm and movable jaw or lever, of the rightmnddefthand screw connecting the Same, and the swivebnnts, arranged in said arm and lever, to receive the ends of the screw, as shown and set forth.

3. In a hand punching-machine, constructed as above described, the employment ot' a loose punch, subst-autially as explained.

4. The combination of the screw-threaded bolt F with the. movable 'jaw or lever to which it is connected, and the `etationary arm and the screw-rod by which said lever iz; actuated to produce the endwise movement of thebolt, as shown and set forth.

1-1. A. SHIPP.

Witnesses:

HENRY C. BANKS, A. S. MILLS. 

